Mastercard will act as enforcer for RIAA, MPAA
news.cnet.com
news.cnet.com
Saying that Visa and MC should be required to accept all transactions would be a very strong statement. It's not impossible, but it's very strong.
I'm pretty sure that pedophile guide they were selling on Amazon a while back had Visa/MC as a payment option, because Amazon took my Visa a while ago when I bought something there.
As such, given that they won't process payments for just anyone, I'm going to assume that Visa/MasterCard explicitly endorses each and every group for which they accept payments.
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We're talking about people having their work destroyed and possibly seeing their livelihoods ruined because they harmed a company's profits. I'm not comfortable with that, and I'm sure as hell not comfortable with it being done as easily as the article suggests.
Here in Canada, telecommunications is a regulated industry and payment processing is an unregulated industry. That makes all the difference. In Canadian terms, you are asking whether payment processing should become a regulated industry with formal rules about who providers must serve and under what circumstances they can decline to provide service.
As a footnote, we Canadians have laws about the particular example you gave that don't translate well in the USA.
http://science.jrank.org/pages/9967/Liberty-Contemporary-Con...